Amorphous optical coatings of present gravitational-wave interferometers

@article{Granata2019AmorphousOC,
  title={Amorphous optical coatings of present gravitational-wave interferometers},
  author={Massimo Granata and A. Amato and Laurent Balzarini and Marco Canepa and J{\'e}r{\^o}me Degallaix and D. Forest and Vincent Dolique and Lorenzo Mereni and C. Michel and L. Pinard and Beno{\^i}t Sassolas and Julien Teillon and Gianpietro Cagnoli},
  journal={Classical and Quantum Gravity},
  year={2019},
  volume={37}
}
We report on the results of an extensive campaign of optical and mechanical characterization of the ion-beam sputtered oxide layers (Ta2O5, TiO2, Ta2O5–TiO2, SiO2) within the high-reflection coatings of the Advanced LIGO, Advanced Virgo and KAGRA gravitational-wave detectors: refractive index, thickness, optical absorption, composition, density, internal friction and elastic constants have been measured; the impact of deposition rate and post-deposition annealing on coating internal friction… 

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